[FTS]

I am wondering the type of support Michelin, Yokohama and others provide to participants of GT3 Challenge and similar series.

I see their presence in races with their trucks, mounting/balancing, etc. What kind of information to they provide? Do they give technical information to help with the setup of the car beyond just optimum operating temperatures? Slip angles, max lateral load numbers, side wall spring rates, etc.? Or they just sell and do mounting and balancing?

Thank you,